$ git clone -n https://src.fedoraproject.org/rpms/cantata.git /var/lib/mock/f39-build-1638264-40035/root/chroot_tmpdir/scmroot/cantata
Cloning into '/var/lib/mock/f39-build-1638264-40035/root/chroot_tmpdir/scmroot/cantata'...
$ git fetch origin 726fe45b1fb3152cd45cc84d4f20afcd658705d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cantata
 * [new ref]         726fe45b1fb3152cd45cc84d4f20afcd658705d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 726fe45 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild